Brief Description of Ore Beneficiation In Market

Iron ore beneficiation is a complex process, it aims to remove the unwanted impurity materials or gangues, improve the iron ore grade and refine the concentrate for final applications. This process involves various types of iron ore beneficiation plant and technology, including milling (crushing and grinding); washing; filtration; sorting; sizing; gravity concentration; magnetic separation; flotation; and agglomeration (pelletizing, sintering, briquetting, or nodulizing) etc.
Brief Introduction: Because of the large amount of lean ore (accounting for 97.5% of the total reserves) and comprehensive ore which associated with other components (accounting for one-third of the total reserves) in our country, most of the iron ore needs dressing process before smelting. In 1996, the selected iron ore was 214.97 million tons which accounts for 85.2% of the amount of undressed ore production of 252.28 million tons.
Next, experts from Henan Hongxing Mining Machinery Co., Ltd will give a detailed introduction to its beneficiation technology and equipment used in this process.
1. Rock crushing:
The dressing plants in our country generally use such three sections of crushing process as coarse, medium and fine breaking to crush it. For the coarse crushing, 1.2m or 1.5m spinning back crusher is used; 2.1 m or 2.2 m standard cone breaker for medium breaking, and 2.1 m or 2.2 m short-headed type cone crusher for fine crushing. The ore after coarse breaking has below 1m of lumpiness, and then through medium and fine grinding, it will be screened for finished products with granularity less than 12mm and then transported to the grinding slots. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like cone crusher, Henan Hongxing is always doing the best in products and service.vibratory feeder:http://www.hxjq-mill.com/products/vibrating_feeder.html
2. Rock grinding:
Most of the grinding technology in our country uses two paragraphs process and for small and medium-sized concentrator, they use one stage process.
3. Ore beneficiation technology:
(1) Magnetite Dressing technology
It is mainly used for dressing magnetite with low taste. Because the rocks have a strong magnetism and easy to grinding, most of the magnetic ore-dressing plants adopt one stage and many stages process for its crushing and grinding. Later, our country independently researched and developed eternal magnetization technology for the magnetic separator. After the 1960s, the new technology of fine screening and grinding again makes the concentrate grade improve to about 66% from 62%, thus realizing the requirement by the Ministry of Metallurgical Industry that the concentrate grade has to be improved to 65%.
At the tertiary process, the equipments are rather diverse from one another for the concentrating strategies are diverse from one another. For example, iron ore producers can select high-intensity magnetic separation; they can also make use of low-intensity magnetic separation approach. Also gravity-separation method is OK. Since the principles of those strategies are various, the machines used in iron ore concentrating process are rather various, as well. Which technique is OK for producers, it depends on the evaluation and experiments.

Big Business Opportunity for Mining Industry In 2012

Minnesota men and women who work in the mining industry might recall the tragic mining accident that occurred in West Virginia two years ago. The workplace accident occurred in April 2010. Twenty-nine coal miners lost their lives in an explosion. An investigation of the tragic accident later revealed that Massey Energy had violated numerous safety rules and regulations in order to save money. Sadly, workers paid the price for these safety violations with their lives.
Time has quietly come to the year of 2012. As for the domestic industry, the infrastructure construction has lifted a new upsurge again; and what is happening in the international market? Many third world countries such as Africa and other countries has shown new dawn in the reconstruction efforts again; many such good news will promote the mining machinery industry to welcome a new year with unlimited business opportunities.
(1) Domestic infrastructure construction lifts a new upsurge.
2012 is a year when the twelfth five year plan of our nation has a strong development. The new rural construction, security housing construction, highway, and railway and water conservancy facilities construction become a top priority. The tendency that our country has a strong support for buildings will certainly increase the demand for raw materials such as cement, sand and concrete and will provide mining machinery industry with new development opportunities. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like spiral separator, Henan Hongxing is always doing the best in products and service.sand washer supplier:http://www.hxjqchina.com/product-list_29.html
In addition, as the policy of development of western regions is promoting continuously, the rich coal and rock resources in the western region will inject new and fresh blood for the industrial development of our country. For this reason, the research and development of highly efficient, energy saving and environmentally friendly crushing equipment, coal mining and manufacturing equipment has become the magic weapon of the mining machinery manufacturing companies for taking up the western market.
(2) Third world countries show new dawn in reconstruction efforts.
In recent years, the third world countries have had remarkable period of development, especially Egypt, Libya, Iraq, Tunisia and other countries, their national reconstruction will become the first priority for the new government to win over popular support and lay the dominant position after coming to power, and road and houses construction are inseparable from the support mining machinery.
Coal mine operators must review their findings with mine inspectors every quarter. MSHA stated that many accidents occur as a result of repeated violations in coal mines. Hopefully these new guidelines will do a better job of preventing employers from making the same mistakes that can lead to serious workplace accidents.

Multifunctional Crushers for Mining Machinery Users

A stone crusher machine, also called rock crusher, is among the most generally used mining crushers. It is made to reduce large rocks into more compact rocks or gravel. Crushed stone aggregates are extensively employed for construction of streets, bridges, housing, industrial structures, along with other cement based products.rock crushing machines for gold ore.
Adopting the latest technological development, this machine is suitable to crush various kinds of ores and rocks of medium or above medium hardness like iron and copper ores, limestone, quartz and granite, etc. Compared with jaw type crusher, it has such advantages as stable structure, high efficiency, easy adjustment, reliable performance and economical operation etc so that it is the ultimate solution for the secondary crushing to achieve uniform product size of hard rocks, ores and minerals. The spring safety system of crusher acts as an overloading protection system that allows metals to pass through the crushing chamber so as not to damage the equipment itself. The safety system uses dry oil and water as two kinds of sealed formation to make plaster powder and engine oil separated to make sure reliable performance. This type of crushing chamber depends upon the size of feeding and fineness of the crushed product. It is available in various designs and models according to the type of the crushing cavity. The standard type (PYB) is applied to medium crushing, the medium type is applied to medium or fine crushing and the short head type is applied to fine crushing. It finds wide application in metallurgy industry, construction, road building, chemical and building materials, etc. The outer shells and the other body components are made out of the finest quality steel castings and its robust design helps withstand high crushing loads. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like cement plant, Henan Hongxing is always doing the best in products and service.ore vibrating feeder:http://www.hx-crusher.com/vibrating_feeder.html
How does it work? It crushes materials by the working surface between the movable cone and fixed cone. So it is more advanced and efficient than jaw crusher. The movable cone is supported by spherical bearing and fixed on a hanging erect shaft which is set in the eccentric sleeve, and the sleeve is set on the stopping and pushing bearing. The movable cone and erect shaft are driven by the eccentric shaft sleeve together. The eccentric shaft sleeve is driven by horizontal shaft and fimbriated gear, and the wheel of the belt conveyor is driven by motor through v-belts. The lower part of vertical shaft is installed in the eccentric sleeve. When the eccentric sleeve rotates, there is a conical surface lined out by the shaft. When the movable cone comes near the fixed cone, rocks are grinded into pieces, when the cone leaves, grinded materials is discharged from the discharge hole. The fixed cone can be ascended or descended by adjusting setting to adjust the width of discharge hole, and consequently the output size is determined.
Within the stone crusher plant, stone crusher machine can be used to crush gemstones into small particle size or alter the form for example limestone, quarta movement, marble, granite for building aggregates, artificial sand production and recycle building spend for example debris, asphaltic cement concrete. Usually in stone crushing plant, we crush gemstones into small contaminants with diameter of 10mm,12mm,19mm,25mm,50mm,100mm.magnetite beneficiation machine

Basic Process of Cement Manufacturing and Producing

Sand and gravel used in construction can be described as a long history,which now has become indispensable,especially the aggregate, can be said to have made tremendous contributions to the state’s economic construction in obscurity. It can be said that the staple diet of modern construction is sand and grave.If there is no modern reinforced concrete buildings erected,no emergence of excellent variety of road pavement, subgrade and new building materials.It is fully reflected in our sand and gravel production processing equipment,crusher,sand making machine and other mining machinery has witnessed rapid development in order to fully meet the demand of the aggregate production of mineral processing equipment, and further consolidate the cement and concrete markets.
Cement manufacturing as a procedure and as a big production line has undergone many phases of makeover in current times.
An integrated cement manufacturing process is that prepares the raw mix, feeds it to the pyro-processing system (kiln), and then grinds the clinker from the kiln system into various cement products. Finished cement is stored in large silos on site or bagged for small quantity use.
Crushing process: The raw materials mainly limestone, clay, coke are crushed in the separate crushers and stored automatically into the respective silos.
Storage and Proportioning: The different raw materials are extracted from the silos in the desired proportion through table feeders and conveyed to raw mill.
Raw Milling: The raw mix is ground into a ballgrinder at desired fineness to produce Raw Meal, and transported for Homogenizing.
Blending & Homogenization: The raw meal is homogenized in the blending silos, and is stored automatically into a storage silo for feeding to the kiln. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like flotation cell, Henan Hongxing is always doing the best in products and service.secondary cone crusher:http://www.china-hxjq.com/p14.html
Palletizing & Burning: The nodules are made into a nodulisor and charged into the kiln for burning. The clinker after discharge is stored in the clinker yard through deep Bucket Elevator.
Clinker/gypsum crushing, storage & proportioning:
Clinker & Gypsum after crushing stored into the hoppers and extracted in the desired proportion with the help of table feeders and transported to the mill Hopper.
Cement Grinding: The clinker & Gypsum mix is ground to produce cement.
Storage & Packing: The cement is stored into the cement silos and aerated, tested and packed for dispatch.
Cement manufacturing plants:
Cement manufacturing plants should be include high efficient separator which has such characteristics as low energy consumption, cooling and drying, high availability, relatively low capital expenditure, high selectivity, and, proper product separation.
With the development and innovation of society, science and technology,Hxjq cone crusher has reached the international level. Recent years, new type hydraulic cone crusher with its high crushing frequency and efficiency of the crushing chamber shaped perfectly, higher capacity than other models of crusher, which greatly improved laminated crushing effect between the particles of the material, to make sure broken products to keep the uniform cube.The use of hydraulic insurance, hydraulic adjustment and hydraulic chamber clea,let the operation more convenient and easy to automate, easier maintenance.This crusher as been widely applied to the hematite mineral processing, gold processing, manganese ore, equipment, copper and mineral processing field.

Artificial Sand Plays Important Function in Industry

After entering the new century, the implementation of new national standards provides the theoretical basis for the production and application of artificial sand. Artificial sand has gradually embarked on the road of rapid development. The development of artificial sand is suitable for the policies of our country and it has a lot of advantages. For example, it can make up the shortage of grit in natural sand resources, the composition of the sand can be controlled and people can make full use of the different kinds of abandoned tailings or waste rock to achieve the purpose of comprehensive utilization and so on. The shortage of the sand resource helps to open a broad space for the popularization and application of artificial sand.
The saying the 'Wanna be rich? Build roads first!' has been deeply cognized by common people, yes, highway is the lifeblood to promote the economic development of China. The availability of highway means the unobstructed road of the development of market economy. In the twelfth five years plan period, China will continue to make strengthening economic construction as the key point and highway and railway construction is also expanding the scale constantly. Especially the policy support west development, many engineering construction projects are developed which direct drive the demand for mechanical equipment, especially the demand for mining machinery and equipment.
In the construction highway and railway, the demand for the amount of sand is very large, nowadays, only relying on the supply of natural sand material is far from enough enough, artificial sand was born at the right time. However, the performance characteristics of artificial sand are also questioned: can it take the place of the performance of natural sand? With these questions, we consult a professional manufacturer of sand making equipment-Hongxing Machinery. Experts analyze that, from the general sense, artificial sand refers to all of manufactured sand and mixed sand that have been treated by the soil. Artificial sand refers to the sand that has been broken by the crusher and screened that gives conform to the materials specifications. In the project construction, it often mixed together with natural sand and its proportion is configured according to the various properties of concrete that engineering project requires. Before use, it also needs strict technical requirements and inspection. According to the difference of production mineral sources and processing technology, it will be different in the shape and the gradation. Compared with natural sand; if the proportion design and other material molding maintenance condition are the same, concrete that using artificial sand configured out has the following characteristics. The slump is decreased; if keeps the slump constant, the need of water will increase. Hongxing Machinery experts also especially emphases that in the actual operation, proportion designing the concrete according to its characteristics and adjusting the sand ratio is able to prepare can makes concrete with very good workability. This ratio has long been applied in Three Gorges Project and Xiaolangdi project and has gained very good test and verification. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like vibratory feeder, Henan Hongxing is always doing the best in products and service.screw classifiers:http://www.hxjq-crusher.com/22.html

The Upgrading Development of Hongxing Tertiary Impact Crusher

In the rapid development of the society, people demand a higher level of quality and price of products, and how to achieve the best interest people searching for? For this reason, many enterprises have a lot of space to develop and upgrade. In mining machinery industry, only by continuous innovation and upgrading for mining equipment, can we provide the customers with necessary product equipment. Now we introduce the upgrading development of tertiary impact crusher to you.
All the machineries, such as ball mill, tertiary impact crusher, magnetic separator, flotation separator have a service life. The life cycle is inevitable existence of market development, the expansion of the market, market saturation, market decline and to finally gradually faded out of the market. The market analyst from Hongxing said that the different models of dressing equipment showed different service life. For the ball mill, its lifecycle can be used up to 10 years. In general, the lifecycle of tertiary impact crusher is short, usually for 2-4 years. Therefore, more stone crushing manufactures should pay more attention to the innovation of tertiary impact crusher. By continuous innovation for small parts, the whole production line showed a good trend. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like sand washing machine, Henan Hongxing is always doing the best in products and service.clinker rotary kiln:http://www.hx-crusher.com/rotary_kiln.html
The systematic handling by experts can count all important parameters in production, which can conduct the future production of a company. These beneficial practices can ensure that tertiary impact crusher made by Hongxing keeps a fine development trend in the fierce competition market.
As we all know, the fine design concept, up-to-date technologies, favourable price and good service can attract more users to purchase. Therefore, as the leading manufacturing company of crushing equipment, Henan Hongxing is working hard in developing energy-saving, upsizing, and high tech tertiary impact crusher. In the near future, our crushing equipment is in a leading position in the world market, and will establish a banner for the domestic mining machinery industry.

Vibratory Mill Provides New Grinding Method

Vibratory Grinding Mills Size Reduction Equipment CathayPhillips also carries a full complement of parts and accessories for the Vibro-Energy Grinding Mills. Ancillary features include components such as Cathayphillips’ newly developed door plug, FDA linings for sanitary applications, and various grinding pots for smaller lab size units. Grinding Media is also available through our company for our customers’ convenience.
A vibratory mill having a long, thin milling chamber which spirals upward in a conical arrangement from a center location within a housing to a point at the periphery of the housing. The configuration of the chamber improves the efficiency of the mill and promotes the use of a continuous operation rather than a batch process. Eccentrically mounted rotating weights cause the media and parts to migrate upward from a central receiving position to the periphery of the housing.
This is the first mill we will consider which does not rely on rotation for the main grinding action. The vibrating mill is a grinding chamber which is filled to about 65 – 80% of its capacity with grinding media such as balls or rods. The chamber is vibrated at a frequency of between 1000 and 1500 times per minute (can be variable speed) by cams or imbalanced weights.
The grinding action is efficient and thorough. Grinding media material and chamber lining can vary depending on application.
Vibrating mill can grind hard or soft materials. Maximum throughput is in the order of 20 t.p.h. but feed size should be kept fairly small. Although final product size can be as low as 0.005mm this type of mill is often used for less fine applications. Product size and shape is a function of the time spent in the mill, media type and size, and frequency of vibration. Commonly functions as a batch mill. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like mobile crusher, Henan Hongxing is always doing the best in products and service.china vibrating feeder:http://www.china-hxjq.com/p20.html
Material suitability for vibratory mill: Lime, Calcium carbide, Alumina, Gypsum, Bauxite, Chromitem, Limestone, Sillimanite, Fluorite, Pigments, Dolomite, Magnesite.
Vibratory mills are the most versatile line of mills available today for fast, low-cost particle size reduction to sub-micron range. Vibratory mill action achieves higher output per input horsepower; precise control of size and distribution. Product contamination from media and lining wear is virtually eliminated. Maintenance costs are low because of few moving parts and replaceable linings made of abrasion-resistant metal, ceramic or elastomers.
The Vibratory Mill's unique vibratory motion, coupled with the use of cylindrical media, allows a dense packing of the media bed assuring maximum media surface contact and minimum void area when operated under a low energy condition.
Vibratory mill action achieves higher output per input horsepower; precise control of size and distribution. Product contamination from media and lining wear is virtually eliminated. Maintenance costs are low because of few moving parts and replaceable linings made of abrasion-resistant metal, ceramic or elastomers.